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 4 Channel Temperature and Relative Humidity Data Logger
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U12 Temperature and RH Data Logger
Manufacturer : Onset Computer Corp.

Onset HOBO Two Channel USB Temperature/Relative Humidity Logger with 12-bit Resolution

The temperature and humidity data logger is a two-channel electronic device measuring and logging temp and rh. The logger features high-accuracy internal sensors, 12-bit resolution, capable of storing 43,000 samples, direct USB connectivity and 1-year user-replaceable battery.

Required with the Data Logger
>> HOBOware™ Software Kit

NOTE: NIST Calibration is available.
Large Quantity Discounts Are Available!

Temperature and Humidity Logger Features

  • Stores up to 43,000 12-bit Samples/Readings
  • Programmable Start Time/Date or Push-Button Start
  • Programmable Sampling Rate of 1 second to 18 Hours
  • Numerous Event Types (Button Push/Release, Host PC Connection, Low Battery), Stored to Data File Asynchronously During Logging
  • 1-Year User-Replaceable Battery
  • Non-volatile Memory Retains Data Even if Battery Fails
  • Requires HOBOware Software and USB Kit (PC and MAC Versions)


Temperature and Humidity Logger Specifications

Data Storage Capacity 43,000 12-bit Samples/Readings
Sampling Rate 1 Second to 18 Hours
Measurement Range Temperature: -20°C to 70°C (-4°C to 158°F)
Humidity: 5% to 95% RH
Accuracy Temperature: ±0.35°C from 0°C to 50°C
Humidity: ±2.5% RH from 10% to 90% (10°C to 50°C) *
Resolution Temperature: 0.03°C at 25°C (0.05°F at 77°F)
Humidity: 0.03% RH
Drift Temperature: 0.1°C/year (0.2°F/year)
Humidity: <1% per year; RH Hystersis 1%
Response Time
(airflow: 1m/s)
Temperature: 6 Minutes, typical to 90%
Humidity: 1 Minute, typical to 90%
Time Accuracy ±1 Minute per Month at 25°C (77°F)
Operating Temperature Logging: -20°C to 70°C (-4°F to 158°F)
Launch/Readout: 0°C to 50°C (32°F to 122°F)
Battery Life Typically 1 Year
Battery 3-Volt CR-2032 Lithium Battery (User Replaceable)
Standards Compliance CE
Weight 46 g (1.6 oz)
Dimensions 58mm x 74mm x 22mm (2.3" x 2.9" x 0.9")
* Conditions Above 80% RH and 60°C(140°F) may cause additional error

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